Answer
$f(g(x))=x,$
$g(f(x))=x$
Work Step by Step
$f(x)=x,$ $g(x)=x,$
$f(g(x))=x,$
Domain of $f(g(x))$ is $x\in \mathbb{R}$
$g(f(x))=x,$
Domain of $g(f(x))$ is $x\in \mathbb{R},$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter 6 - Section 6.2 - One-to-One Functions; Inverse Functions - 6.2 Assess Your Understanding - Page 421: 42
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